Integer log is puzzled by Python int argument

[rws]

sage: ZZ(8).log(int(2))
log(8)/log(2)

[rws]

New commits:

​de1acfa	21517: handle ZZ.log(1/n)
​3ce2cd2	21518: accept Python ints as log base to ZZ.log

[tscrim]

Why not if type(m) == int:? Or perhaps, a more robust if m in ZZ: (or try: m = Integer(m))?

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​79a5a4a

21518: improve code

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​4aba8a9	21517: avoid duplicate computations
​33a0de3	Merge branch 'u/rws/log_of_integer_to_base_1_n_can_have_exact_numeric_results' of trac.sagemath.org:sage into t/21518/integer_log_is_puzzled_by_python_int_argument

[tscrim]

Why is the if m is None: case in the try block? Could we just test that first?

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​6e250f0

21518: reorder some lines

[tscrim]

One last thing, the if m in None: block is 1 over indented. Once you make this change, you can set a positive review on my behalf.

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​ab830ba

21518: cosmetics

[rws]

Thanks for the review.